Canal-look



(No Model.)

H. O. HARRISON CANAL LOGK. No. 446,708. `Patented Feb, 17, 1891.

(IIII IIIII I 1 |11 S H. Haar/A dnnnfjn nl?! unf-RY c. iiaRRisoR,d orPo'roMAc, MARYLAND.' I

cantautore/n n.

SPECIFICATION forming part of Letters Patent No. 446,708, dated February17', 1891.' I

Application filed July 8, 1390. Serial No.358,lll. (No model.)

To all whom it may concern,.-

Be it known that I, HENRY C. HARRISON, a citizen of the United States,residing 'at Poto mac, in the county of Montgomery, State of Maryland,have invented certain new and useful Improvements in Canal-Locks, ofwhich the following is a specification, reference being had therein tothe accompanying drawings.

rlhis invention relates to certain new and useful improvements 'incanal-locks; and it has for its objects-among others, to provide animproved device of this character which shall be eicient in operationand wherein provision shall be made for ready repairs when. necesi saryand for the prevention of clogging of the guideway for the gates.

I form the gates of sections flexibly connected together, so as topermit of their be-4 ing wound np within ya caisson, and yet whenextended shall form a water-tight gate. I

provide sluiceways in sonne or all of the gatesections with means formanipulating the valves when desired. I provide automatically-fallinggates to cover the guideways for the gates as the latter are drawn in,so as to prevent the accumulationof mud and other foreign substances onthe screw or guideway. I provide movable bridges which serve as guidesfor the upper ends of the gates proper, and also as a bridge to permitaccess to the sluice-valves when the gates are closed. Y

Other objects and-advantages 'of the inven tion will hereinafterappear/,fand 'the novel features thereof 'will bejspecilically defined'by the appended claijns.

The invention is clearly illustrated in the accompanying drawings,which, with the letters o f reference marked thereon, form apart vofthis specification, and in which.- v

Figurel is a View illustrating my improve-A ments with one side in rearelevation and the other in vertical section. Fig. 2 is a top plan of thesame. Fig. 3 is a vertical crossfsection through one of the gatesproper. Fig. 4 is a.

vertical cross-sectional detail through a gate, showing the valve forWaterbalancing the gate. Fig. 5 is a detail showing a section of.thelower gate.

y Like letters of reference indicate like parts throughout the severalviews. I Referring now to the details of the drawvseen at the right ofFig. 1.

lgates are secured.

ings by letter, A designates a caisson 0r tower of suitable constructionsupported upon s uitable foundation, there being one upon each side ofthe canal orlock.

B is a vertical shaft supported in suitable its lower end a beveledpinion B', which is stepped upon a suitable step or toe b, preferably oflignum-vitae, secured withina suitable '.bearings'within the caisson andcarrying at recess b', as shown to the right of Fig. 1..

This beveled pinion is preferably arranged toride upon roller-bearingsa, as seen'atf vthe .Y

Art the lower'end of the caisson' is an up-" wardly-extending vflangea', which serves as 'a' i guide for the lower inner face of the gate,Yas This flange may be a wheel ffast upon and moving with the shaft B,and npon said shaft there are fast two other wheels B2, provided withlugs b2, asA

seen best in Fig. 2, to which lugs the flexible Upon the upper end et'the shaft B there is a beveled pinion @which meshes with a beveledpinion b4 on' the shaft B3, supported in.

suitable bearings and arranged to lbe actu-l ated from anyflsuitablesource of power.

tate the shaft B, and consequently the pinion B. I

C are the gates proper, each consisting of a plurality of water-tightsections c, tapered` vertically, as seen in Figs 1 and 3, and eachsection composed, preferably, of b oiler-ii'on stayed by inclined bracesc', as shown 1n Figs. l and 3. These sections are hinged together Notshown.) Rotation of this shaft will ro upon their. adjacent rear facesby means of suitable hinges c, as seen in Figs. l and 2,- andthe inneredge of the inner section is if v pivotally connected with the lugb2 ofthe):v

wheels on shaft B, as shown at c3 in Fig. 2.

,This inner section is also made tapering in gates are taperedvertically, being larger attheir base. where the greatest pressure is 1oIOO lbe sustained, as readily seen from the drawings. The gate-sectionsare formed upon their vertical edges one with a V-shaped Aor analogousprojection C1* to engage a corre- 5 spondingly-shaped recess C5 in theadjacentedge of the adjacent section, asclearly shown in Fig. 2, so thatwhen the gate is extended, as seen at the left of Fig. 2, water-tightjoints will 4 be formed between the sections, and pressure of the waterthereon will only tend to more firmly bind them together, as will bereadily understood.

The gates are provided in some or all of ltheir sections with sluiceways(1 6, which are 1 5 controlled by the Valves C7, which are tapered,

-as shown in Fig. 3, and designed to move in suitable ways of guides, asseen in said figure, their movement being regulated by means of verticalrods D, provided at their upper ends with hand-wheels or otherprovisions d, by which they are turned, and the valves being designedwhen raised to be inclosed within the boxing or chamber d in the gate.

'j The gates are opened and closed through the medium of the verticalshafts and the wheels thereon, .to which the gates are attached. l

The gates are guided at their lower ends in any suitable manner. lIprefer, however, to

the nut working through a slot in the upper end of said tube or casing.Anti -friction rollers f are also preferably provided to demoving uponthe tracks or guides f as seen vin Fig. 3. v In order to water-balancethe gates when desired, I provide the same at the lower edgev of thesections with apertures g, controlled by the valve G, provided'withvalve-stems Gr, designedto extend upward within convenient'reach of theoperator. y

In order to prevent access of water to the tube or casing F2, I formsaid lcasing upon its rear .side with a vertical extension F, the innerface of which is provided withl a substantially V-shaped projection f3,which engages and works in a correspondingly-shaped recess 'ntherearside of the gate-section, as seen g. 3.

I order to prevent accumulation of mud, m f &c., upon the screw or inthe guide gates-that is, so as to close in the direction guide them asshow-n in Figs. 1 and 2, whereincrease the friction of the parts, saidrollers fonytlie gates, I provide hinged lower gates of the pressure ofthe water, as seen in Fig. 3. These gates are formed `in overlappingsections, as' seen in Figs. 1, 2, and 5 ,"so arranged that each Isectionmay move inde-v pendent of the. other. When'the gates C arc closed,these gates lievertically, as shown in Fig, 3, against the said gates C;but as said gates are opened the pressure of the water against the gatesH closes them down over the screw or the guideways for the gates, asseen in Fig. 1. The outer or rst sections of the gates C are providedwith a plow or nose-piece C8, adapted to enter beneath the sections ofthe gates H -as the gates C are moved outward, and thus force them outor up,l as willA be readily understood; At the entrance of the caisson Iprovide a hinged gate I, which is 'moved outward by the gates C as theyare opened and automatically closed by the pressure of the'water to sealthe vcaisson as the gates are closed, as seen in Fig. 2.

J are 'bridges hinged, as at' j, to any suitable'support or breastworkand designed to be elevated 'upon their pivots by means of cords orchains -J, attached to their outer ends and connected lwith any suitablehoist,- ing apparatus. (Not shown.) These bridges embrace the upper endsof the gates C and serve as guides therefor, Ias seen in Fig.

They are lowered into position while the gates are open, and the gateswhen closed arc guided at -their upper ends thereby, said bridgesbeingprovided with longitudinal central openings'- for the passage of thevalvestems D as the gates are closed. These bridges will be formed of`any suit/able material and form a walk to support the operator when hehas occasion to operate the sluiceivalv'es or serve as a lfoot-pathacross the canal.

- The wheels upon the shaft are skeleton wheels, as shown, vso as toprovide ready access to the parts for the purpose of repair,

allowing of the ready separation of any two Vsections of the gatein caseof damage thereto, and the whole contents of the caisson may be removedbodily, if desired.

Various ymodificationsi in details may be resorted to withoutdepartingfrom the spirit of or sacrificing the advantages of theinvention.

'hat vI clailn'is- 1. In a canal-lock, thc combination, with a caisson,of a flexible gate adapted to be drawn within said caisson,substantially as Specified.

2. In a canal-lock, the combination, with a caisson, of a hingedsectional gate adapted to be wound upon a shaft within said caisson,substantially as specified.'

3. In a canal-lock, the combination, with a caisson,of a flexible gatecomposed of hinged interlocking sections adapted to be wound within saidcaisson, substantially as speci tied.

4. An improved lock-gate formed of hinged interlocking sections,substantially as shown and described.

IOS

IlO

caisson formed with tapered outlets, of a flexible gate having its innersection tapered to conform to the taper of said opening, substantiallyas specified.

f5. In acanal-lck, the combination, with the caisson, o'f a iiexiblegate adapted to be wound therein and an automatically-closing gate tothe entrance of the caisson, substantially as specified.

caisson and the movable gates, of the lowerl hinged gates, substantiallyas and for the purpose specified.

f 8. In a canal-lock, the combination, with the caisson and the movablegates and the guide for the lower end thereof, of the hinged gatesadapted to automatically close the guideway eis ne gates are opened,substantially as speci- 9. In a canal-lock, the combination, with thecaisson, the gates, and the guideway, of the hinged lower gate and thenose upon the movable gate, substantially as and for the purposespecified.

10. In a canal-lock, the combination, with the caisson and the movablegates, of the' hinged lower gates'in overlapping sections, substantiallyas specified.

\ 1l. In a canal-lock, the combination, with the caisson and the movablegates, ofthelower hinged gates in overlapping independentlymovingsections, substantially as specified.

12. In a canal-lock, the combination, withv 'the caissomthe verticalshaft, and the wheels thereon formed with lugs, of the gates in hingedinterlocking sections, the inner one of which is pivotally connected tosaid lugs, substantially as specified.

15. In a canal-lock; the combination, with the caisson and the verticalshaft, of the wheels thereon, the gate, the horizontal screw,fandconnections between said shaft, screw, and gate, substantially asspecified.

16. vIn a canal-lock, the combination, with the caisson, vertical shaft,and the wheels thereon, of the flexible gate connected with said wheels,the horizontal screw to which the gate is attached, and the beveledpinion on f the screw and shaft, substantially as and for 7. In acanal-lock, the combination, with the the purpose specified. i

17. In a canal-lock, the combinatiom'with thecaisson, the verticalshaft, the tiexible gate connected therewith, and the horizont-alscrew', of the nut secured to the gate and engaging the screw, andconnections, substantially as described, between the shaft and screw, asand for t-he purpose specified.

18. In va canal-lock, the combination, with the caisson, vertical shaft,the wheels thereon, exible gate pivotally connected with said wheel, andthe screw', 0f the beveled pinion on the screw, beveled pinion on theshaft meshing therewith, and the nut secured to the lower edge Iof thegate and engaged by the screw, substantially vas specified.

19. The combination, with the casing F2, having the vertical extensionprovided with inward projection, of the movable gate provided withcorresponding depressions to engage said projection, substantially asand for the purpose specified.

20. The combination, with the gate and the Vnut secured thereto, of thecasing, the screw arranged thereinV and engaging the nut, and theanti-friction rollers on tle gate traveling on the upper face ofthecasing,substantiallv as described.

21. The co1nbination,`with the movable gate, of the pivoted bridgeadapted to serve as a guide to the upper end of the gate, substan`ltially as specified.

22. An improved loclcgate formed in hinged interlocking sections, someot` which are provided with sluiccways controlled by adjustable valves.

Intcstimony whereof I allix my signature in presence of two witnesses.

HENRY C HARRISON.

Witnesses:

R. J. BEALL, Jr., E. Il. BOND.

